<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="img/animate.css">
    <style>
        .box{
            width: 200px;
            height: 200px;
            background: yellow;
            margin: 10px auto;
        }
    </style>
</head>
<body>
<div class="box animated bounceInUp"  >我现在很烦</div>
</body>
</html>